Evaluating Technical Efficiency of Selected Healthcare Centres in Yola North using Data Envelopment Analysis. International Journal of Development Mathematics (IJDM), [S. l.], v. 2, n. 2, p. 202–214, 2025. DOI: 10.62054/ijdm/0202.11. Disponível em: https://ijdm.org.ng/index.php/Journals/article/view/188.. Acesso em: 17 apr. 2026.